Apparatuses, systems and methods for locking lift cords used to lift architectural opening coverings

ABSTRACT

A locking member to be used in conjunction with a guide ring and a lift cord configured to raise of lower a covering for an architectural opening, such as a window, door or the like, is disclosed. The locking member is configured to engage the guide ring and the lift cord in such a way that the locking member has a selective rotative ability, which allows the lift cord to freely move in a first direction to raise or lower the covering, but the locking member will move or rotate about the guide ring when the lift cord is pulled in a second direction to pinch the lift cord between the locking member and the guide ring so that the lift cord is prevented from being pulled away from the covering far enough to create a loop of a certain diameter.

RELATED APPLICATIONS

This application is a Divisional of co-pending U.S. patent applicationSer. No. 13/738,387, filed Jan. 10, 2013, entitled “Apparatuses, Systemsand Methods for Locking Lift Cords Used to Lift Architectural OpeningCoverings”, Attorney Docket No. 1226-010, which is incorporated hereinby reference in its entirety.

This application claims the benefit of U.S. Provisional PatentApplication 61/643,931, filed May 8, 2012, entitled “Apparatuses,Systems and Methods for Locking Lift Cords Used to Lift ArchitecturalOpening Coverings”, Attorney Docket No. 1226-010P, which is incorporatedherein by reference in its entirety.

This application is related to co-pending U.S. patent application Ser.No. 12/976,732, filed Dec. 22, 2010, entitled “Cordless Covering forArchitectural Opening”, Attorney Docket No. 1226-002, which isincorporated herein by reference in its entirety.

This application is also related to co-pending U.S. patent applicationSer. No. 12/976,677, filed Dec. 22, 2010, entitled “Architectural CoverOperating Assembly,” Attorney Docket No. 1226-003, which is incorporatedherein by reference in its entirety.

This application is also related to co-pending U.S. patent applicationSer. No. 13/035,222, filed Feb. 25, 2011, entitled “Cordless BlindSystem and Retro-Fit Method”, Attorney Docket No. 1226-001, which isincorporated herein by reference.

This application is also related to co-pending U.S. patent applicationSer. No. 13/094,705, filed Apr. 26, 2011, entitled “Cordless BlindSystem and Retro-Fit Method”, Attorney Docket No. 1226-001CP, which isincorporated herein by reference.

This application is also related to co-pending U.S. patent applicationSer. No. 13/094,727, filed Apr. 26, 2011, entitled “Cordless Coveringfor Architectural Opening”, Attorney Docket No. 1226-002CP, which isincorporated herein by reference.

FIELD OF ThE DISCLOSURE

Embodiments disclosed herein include apparatuses, systems, and methodsfor locking lift cords, particularly lift cords for coverings forarchitectural openings. In particular, a locking mechanism is disclosedthat can be used with lift cords for architectural coverings, such as ashade, to avoid having a hazardous loop formed by the lift cord.

BACKGROUND

In the use of window and architectural passage coverings, the art haslong relied on cords, string or the like to extend and retract thecoverings. Such coverings take many forms, including shades such ascurtains, roll-up shades, Venetian blinds, vertical blinds, cellularshades, and the like. The problem with such coverings that rely on cordsis that small children can become entangled in the cords and experienceserious harm, including strangulation and death. On Aug. 26, 2009, theU.S. Consumer Product Safety Commission announced a voluntary recall ofall ¼ inch Oval Roll-up Blinds and Woolrich Roman Shades, including some4.2 million roll-up blinds and 600,000 Roman shades,(http://www.cpsc.gov/cpscpub/prerel/prhtml09/09324.html). The Commissionreferenced the hazard that “[s]trangulations can occur if the liftingloops slide off the side of the blind and a child's neck becomesentangled on the free-standing loop or if a child places his/her neckbetween the lifting loop and the roll-up blind material.” Recent citedinjuries include a report that “[i]n November 2007, a 1-year-old boyfrom Norridgewock, Maine became entangled and strangled in the lift cordloop of a roll-up blind that had fallen into his portable crib. InOctober 2008, a 13-month-old boy from Conway, Ark. was found with hishead between the exposed inner cord and the cloth on the backside of aRoman shade. The cord was not looped around the boy's neck but ratherran from ear to ear and strangled the child.” Numerous manufacturers andretailers have followed their call. Additional information may be foundat: (http://www.windowcoverings.org).

In addition to the internal cords attached to the shade or blinds thatcan be pulled out and pose a problem, the pull cords, string and beadedcords in mechanical based blinds and shades that are pulled on to drawup the blinds or shades also pose a risk since they also create ahazardous loop of sufficient diameter (12 inches per the ConsumerProduct Safety Commission) for a small child to get their head tangledinside. Some industry standards consider a loop of seven and one halfinches to be hazardous. Even the retrofit devices currently available(http://www.windowcoverings.org/how_to_retrofit.html) do not eliminatethe hazardous loops created by the beaded cords even if they are tied tothe wall with a tie-down device such as a Rollease™ product or withseparated draw strings and/or cord stops that could still become tangledtogether to create a hazardous loop.

U.S. Pat. No. 7,624,784 to Anthony, et al. (hereinafter “Anthony”)discloses a segmented roll-up covering with a plurality of rollerassemblies utilized to form panels wherein each roller assembly includesa strip of flexible lift sheet material and an associated roller aboutwhich the material can be wrapped. One edge of the lift sheet materialis fixed to a relatively rigid bar or is otherwise supported while theopposite edge is secured to its associated roller. The roller with thelift sheet material secured thereto is cradled in one of a plurality ofcradles provided in a first lift system which includes a cord ladder orsimilar structure so that upon movement of one vertical run of the cordladder between an elevated and a lowered position while the othervertical run remains stationary, the cradle is raised or lowered therebylifting or lowering the roller causing it to roll and either roll thefabric thereabout or unroll the fabric there from depending upon thedirection of rotational movement of the roller. One problem with thissystem is that the lift system is enabled by a cord ladder, which asmentioned above, can pose a danger to small children.

There have been attempts to create cordless coverings in the art toaddress the danger posed by lift cords. One example is U.S. Pat. No.7,036,547 to Cheng, et al. (hereinafter “Cheng”) discloses an assemblythat includes a shade capable of height adjustment, comprising a shadewith multiple pleats, a roller, a strap that extends through multiplepleats of the assembly, and at least one strap operatively connectedwith the roller to be raised and lowered as the height of the shade isincreased or decreased. While Cheng discloses a cordless lift mechanism,the lift mechanism disclosed involves straps or narrow ribbons of fabricthat would not reduce the strangulation risk to a child. In addition,the straps are threaded through the shade, exposing holes by which lightcan pass through the shade. Moreover, the straps are not sufficient tohold heavy shades, curtains and the like.

U.S. Published Patent Application No. 20050109468 to Hsu (hereinafter“Hsu”) discloses a cordless blind structure that includes a blind bodyattached to the underside of an upper beam, and a plurality of magnetcomponents of elongated bars or blocks equidistantly distributed fromthe bottom-most slat upward to the top of the blind body. Hsu's systemincludes magnet components fixed to the outer surface of the blind bodythat acts as a cordless lift mechanism wherein the magnet components areconsecutively lifted upwards and sequentially piled up in order to foldup the slats of the blind body. To unfold the blind body, the blind bodyis pulled slightly downwards by the bottom-most slat to detach theengaged magnet components from one another, releasing the collectedblind body to suspend downwards. One drawback to the system of Hsu isthe requirement of having expensive and likely heavy magnets capable ofholding the weight of the blind or sacrificing weight for security thatprecludes the use of such system with heavier coverings such as shades,curtains and the like. Moreover, the system of Hsu fails to includeguiding members to assure that the blind is folded properly.

U.S. Pat. No. 5,706,876 to Lysyj (hereinafter “Lysyj”) discloses acordless, cellular window shade that uses a conventional roller shadebar to raise and lower transversely spaced tapes that extend throughslits in the cellular fabric and are secured to the bottom rail of theshade. The deficiencies of the Cheng shade assembly are also present inthe shade disclosed in Lysyj.

U.S. Pat. No. 5,273,096 to Thomsen et al. (hereinafter “Thomsen”)discloses an apparatus for gripping lengths of sheet material in afoldable blind or shade, in a blind that is composed of one continuouspiece of fabric. Tubular members having longitudinal openings thereinwhich accept the sheet material through grooves are described. Rodmembers also fit within the tubular members, to hold the sheet materialbetween the tubular members and the rod members. Guide means arearranged to guide pull cords, and engage a longitudinal groove in eachtubular member. Thomsen discloses a powered lift mechanism, but onlyexemplifies shades that include corded lift mechanisms that do noteliminate the risk of strangulation.

In consequence, the art is in need of improvement in coverings forarchitectural openings that maintains the functionality and aestheticsof previously developed coverings, but avoids their deficiencies,particularly their hazardous character as regards the risk of injury ordeath associated with the use of cord arrangements. The art also is inneed of a new mechanism to allow the lifting of shades without creatinga hazardous loop.

SUMMARY

Embodiments disclosed in the present Specification relate to a lockingmechanism for a lift cord configured to raise of lower a covering for anarchitectural opening, such as a window, door or the like. Inparticular, embodiments disclosed in the present description relate to alocking member to be used in conjunction with a guide ring and a liftcord for a covering for an architectural opening, such as a window,door, portal, or the like. The locking member is configured to engagethe guide ring and the lift cord. The locking member is configured toengage the guide ring and the lift cord in such a way that the lockingmember has a selective rotative ability, which allows the lift cord tofreely move in a first direction to raise or lower the covering, but thelocking member will move or rotate about the guide ring when the liftcord is pulled in a second direction to pinch the lift cord between thelocking member and the guide ring so that the lift cord is preventedfrom being pulled away from the covering far enough to create a loop ofa certain diameter.

In one embodiment, an apparatus for locking a lift cord designed to liftcoverings for architectural openings is disclosed. The apparatuscomprises a locking member having a groove and at least one opening. Thegroove is configured to engage a guide ring attached to a covering foran architectural opening. The at least one opening is configured toreceive the lift cord such that the lift cord passes through both theguide ring and the locking member. The locking member is configured toengage the guide ring and the lift cord such that the locking memberallows the lift cord to freely move in and out of the at least oneopening in a first direction to raise or lower the covering. The lockingmember is further configured to move about the guide ring when the liftcord is pulled in a second direction to pinch the lift cord between thelocking member and the guide ring to prevent the lift cord from beingpulled away from the covering far enough to create a loop of greaterthan a certain diameter.

In another embodiment, an alternate apparatus for locking a lift corddesigned to lift coverings for architectural openings is disclosed. Thelocking apparatus comprises a ring base attached to a covering for anarchitectural opening, the ring base having a plurality of slots. Theapparatus further comprises a snap-on post having at least one openingand a plurality of prongs disposed on a surface of the snap-on post. Theat least one opening of the snap-on post is configured to receive thelift cord. The snap-on post cam ne snapped onto the ring base by fittingeach of the plurality of prongs into a corresponding one of theplurality of slots of the ring base. The apparatus further comprises arotative lock member having at least one opening configured to receivethe lift cord. The rotative lock member is configured to be positionedaround the snap-on post such that the at least one opening of therotative lock member is aligned with the at least one opening of thesnap-on post to allow the lift cord to pass through the at least oneopening of both the snap-on post and the rotative lock member. Therotative lock member is further configured to allow the lift cord tofreely move in and out of the at least one opening of both the snap-onpost and the rotative lock member in a first direction to raise or lowerthe coverin. The rotative lock member is configured to move about thesnap-on post when the lift cord is pulled in a second direction to pinchthe lift cord between the rotative lock member and the snap-on post toprevent the lift cord from being pulled away from the covering farenough to create a loop of greater than a certain diameter.

In another embodiment, a method for locking a lift cord designed to liftcoverings for architectural openings is disclosed. The method comprisesproviding a covering for an architectural opening that is configured tobe raised or lowered by at least one lift cord. The method alsocomprises attaching a guide ring to a surface of the covering. A lockingmember having a groove and at least one opening is positioned such thatthe groove of the locking member is configured to engage the guide ring,and the at least one opening is configured to receive the lift cord suchthat the at least one lift cord passes through both the guide ring andthe locking member. The locking member is configured to engage the guidering and the at least one lift cord such that the locking member allowsthe at least one lift cord to freely move in and out of the at least oneopening in a first direction to raise or lower the covering. The lockingmember is further configured to move about the guide ring when the atleast one lift cord is pulled in a second direction to pinch the atleast one lift cord between the locking member and the guide ring toprevent the at least one lift cord from being pulled away from thecovering far enough to create a loop of greater than a certain diameter.

In another embodiment, another method for locking a lift cord designedto lift coverings for architectural openings is disclosed. The methodcomprises providing a covering for a architectural opening that isconfigured to be raised or lowered by at least one lift cord. The methodalso comprises attaching a ring base having a plurality of slots to thecovering for an architectural opening. A snap-on post having at leastone opening and a plurality of prongs disposed on a surface of thesnap-on post is then snapped onto the ring base by fitting each of theplurality of prongs into a corresponding one of the plurality of slotsof the ring base. The at least one opening of the snap-on post isconfigured to receive the at least one lift cord. The method furthercomprises positioning a rotative lock member around the snap-on post.The rotative lock member comprises at least one opening configured toreceive the at least lift cord, which is aligned with the at least oneopening of the snap-on post to allow the at least one lift cord to passthrough the at least one opening of both the snap-on post and therotative lock member. The rotative lock member is configured to allowthe at least one lift cord to freely move in and out of the at least oneopening of both the snap-on post and the rotative lock member in a firstdirection to raise or lower the covering. The rotative lock member isfurther configured to move about the snap-on post when the at least onelift cord is pulled in a second direction to pinch the at least one liftcord between the rotative lock member and the snap-on post to preventthe at least one lift cord from being pulled away from the covering farenough to create a loop of greater than a certain diameter.

In yet another embodiment, a system for locking a lift cord designed tolift coverings for architectural openings is disclosed. The systemcomprises a covering for a architectural opening that is configured tobe raised or lowered by at least one lift cord. At least one guide ringis attached to a surface of the covering. The system also includes alocking member having a groove and at least one opening. The groove ofthe locking member is configured to engage the guide ring, and the atleast one opening is configured to receive the lift cord such that theat least one lift cord passes through both the guide ring and thelocking member. The locking member is configured to engage the guidering and the at least one lift cord such that the locking member allowsthe at least one lift cord to freely move in and out of the at least oneopening in a first direction to raise or lower the covering. The lockingmember is further configured to move about the guide ring when the atleast one lift cord is pulled in a second direction to pinch the atleast one lift cord between the locking member and the guide ring toprevent the at least one lift cord from being pulled away from thecovering far enough to create a loop of greater than a certain diameter.

In another embodiment, an alternate system for locking a lift corddesigned to lift coverings for architectural openings is disclosed. Thesystem comprises a covering for a architectural opening that isconfigured to be raised or lowered by at least one lift cord. The systemalso comprises a ring base attached to the covering, the ring basehaving a plurality of slots to the covering for an architecturalopening. The system further comprises a snap-on post having at least oneopening and a plurality of prongs disposed on a surface of the snap-onpost, wherein the at least one opening is configured to receive the atleast one lift cord. Each of the plurality of prongs is configured tofit into a corresponding one of the plurality of slots of the ring basesuch that the snap-on post can be snapped onto the ring base. The systemfurther comprises a rotative lock member having at least one openingconfigured to receive the lift cord. The rotative lock member isconfigured to be positioned around the snap-on post such that the atleast one opening of the rotative lock member is aligned with the atleast one opening of the snap-on post to allow the lift cord to passthrough the at least one opening of both the snap-on post and therotative lock member. The rotative lock member is configured to allowthe lift cord to freely move in and out of the at least one opening ofboth the snap-on post and the rotative lock member in a first directionto raise or lower the covering. The rotative lock member is furtherconfigured to move about the snap-on post when the lift cord is pulledin a second direction to pinch the lift cord between the rotative lockmember and the snap-on post to prevent the lift cord from being pulledaway from the covering far enough to create a loop of greater than acertain diameter.

Other aspects, features and embodiments will be more fully apparent fromthe ensuing disclosure and appended claims.

Those skilled in the art will appreciate the scope of the presentdisclosure and realize additional aspects thereof after reading thefollowing detailed description of the preferred embodiments inassociation with the accompanying drawing figures.

BRIEF DESCRIPTION OF THE DRAWING FIGURES

The accompanying drawing figures incorporated in and forming a part ofthis specification illustrate several aspects of the disclosure, andtogether with the description serve to explain the principles of thedisclosure.

FIG. 1A is a representative back view of a prior art architecturalopening covering system that uses lift cords.

FIG. 1B is a representative side view of the prior art architecturalopening covering system of FIG. 1 illustrating how hazardous loops canbe formed by the lift cords of the prior art.

FIG. 2 is a representative view of an exemplary guide ring used in oneembodiment of an exemplary system for locking lift cords used inarchitectural opening covering systems.

FIG. 3A is a representative front view of an exemplary locking memberused in one embodiment of an exemplary system for locking lift cordsused in architectural opening covering systems.

FIG. 3B is a representative sectional end view of the exemplary lockingmember shown in FIG. 3A.

FIG. 3C is a representative top view of the exemplary locking membershown in FIG. 3A.

FIG. 4A is a representative top view of an alternate exemplary lockingmember used in one embodiment of an exemplary system for locking liftcords used in architectural opening covering systems.

FIG. 4B is a representative front view of the exemplary locking membershown in FIG. 4A.

FIG. 5 is a representative top view of a ring base portion of thelocking member shown in FIGS. 4A and 4B.

FIG. 6A is a representative side view of a snap-on post portion of thelocking member shown in FIGS. 4A and 4B.

FIG. 6B is a representative bottom view of the snap-on post portion ofthe locking member shown in FIG. 6A.

FIG. 7 is a representative top view of the exemplary locking membershown in FIG. 4A.

FIG. 8 is a representative back view of an exemplary shade having aplurality of lift cords and a plurality of guide rings in conjunctionwith exemplary locking members like those illustrated in FIGS. 3A-3C.

FIG. 9 is a close up representative side view of the exemplary shade ofFIG. 8 in a partially lifted position, illustrating an exemplary liftcord, exemplary guide rings, and exemplary locking members.

FIG. 10 is a close up representative side view of an exemplary liftcord, an exemplary guide ring, and an exemplary locking member,illustrating the exemplary guide ring attached to the shade and theexemplary locking member in a first position.

FIG. 11 is a close up representative side view of the exemplary liftcord, the exemplary guide ring, and the exemplary locking member of FIG.10, illustrating the exemplary locking member having been rotated to asecond position.

FIG. 12 is a representative back view of an exemplary shade having aplurality of lift cords and a plurality of guide rings in conjunctionwith exemplary locking members like those illustrated in FIGS. 4A-7.

FIG. 13 is a close up representative side view of the exemplary shade ofFIG. 12 in a partially lifted position, illustrating exemplary lockingmembers like those illustrated in FIGS. 4A-7 attached to a surface ofthe shade and an exemplary lift cord running through the exemplarylocking members.

FIG. 14 is a close up representative side view of an exemplary lockingmember like those illustrated in FIGS. 4A-7 and an exemplary lift cordrunning through the exemplary locking member.

DETAILED DESCRIPTION

The embodiments set forth below represent the necessary information toenable those skilled in the art to practice the embodiments andillustrate the best mode of practicing the embodiments. Upon reading thefollowing description in light of the accompanying drawing figures,those skilled in the art will understand the concepts of the disclosureand will recognize applications of these concepts not particularlyaddressed herein. It should be understood that these concepts andapplications fall within the scope of the disclosure and theaccompanying claims.

Embodiments disclosed in the present Specification relate to a lockingmechanism for a lift cord configured to raise of lower a covering for anarchitectural opening, such as a window, door or the like. Inparticular, embodiments disclosed in the present description relate to alocking member to be used in conjunction with a guide ring and a liftcord for a covering for an architectural opening, such as a window,door, portal, or the like. The locking member is configured to engagethe guide ring and the lift cord. The locking member is configured toengage the guide ring and the lift cord in such a way that the lockingmember has a selective rotative ability, which allows the lift cord tofreely move in a first direction to raise or lower the covering, but thelocking member will move or rotate about the guide ring when the liftcord is pulled in a second direction to pinch the lift cord between thelocking member and the guide ring so that the lift cord is preventedfrom being pulled away from the covering far enough to create a loop ofa certain diameter.

The advantages and features of the embodiments disclosed herein arefurther illustrated with reference to the following disclosure, which isnot to be construed as in any way limiting the scope of the inventionbut rather as illustrative of the invention in a specific applicationthereof.

FIG. 1A is a representative back view of a prior art architecturalopening covering system that uses lift cords. The architectural openingcovering system 10 comprises a shade 11 made of any suitable material,including but not limited to fabric, wood, or plastic. In oneembodiment, the shade 11 may comprise a lift sheet material with adecorative shade material behind it. The architectural opening coveringsystem 10 includes a support member 12 for attaching to or above awindow, door, portal or other architectural opening. The support member12 is preferably attached at the top of the architectural opening sothat gravity can aid in lowering the covering or shade 11 over theopening. One end of the shade 11 is preferably attached to the supportmember 12 at one end, and another end of the shade 11 is affixed orengaged in some way to a lift bar 13 at another end. The shade 11 may beaffixed or engaged to the support member 12 and the lift bar 13 in anysuitable manner, such as with magnetic strips, Velcro® hook and loopfastener members, adhesive, stitching, or a pocket for collecting thelift bar 13 attached to the shade 11 via any suitable means. The shade11 can be any woven or non-woven material, fabric or the like.

The shade 11 has grommets 14 surrounding openings 16 for one or morelift cords 18 to pass through the openings 16. The lift cords 18 areattached to the support member 12 and to the lift bar 13 and areconfigured to lift the shade 13 when actuated. The lift cords 18 may beactuated by any known method, including a roller or crank mechanism (notshown). The shade 11 may also have one or more guide rings 20 that thelift cord 18 passes through to aid in the rising and lowering of theshade 11. The guide rings 20 allow the lift cord 18 to pass through asthe lift cord 18 moves to raise or lower the shade 11. As the shade 11is drawn upwards by the lift cord 18 passing through the guide rings 20,the guide rings 20 stack on top of each other and raise the shade 11upwardly into folded layers stacked in an accordion fashion (see bottomof FIG. 1A). As pictured in FIG. 1A, there are three lift cords 18 andthree rows of guide rings 20, with 8 guide rings in each row. However,depending on the size and type of architectural covering, any number oflift cords 18 may be used, with any number of rows and any number ofguide rings in each row.

FIG. 1B is a representative side view of the prior art architecturalopening covering system of FIG. 1 illustrating how hazardous loops canbe formed by the lift cords of the prior art. Due to the slack necessaryto allow the lift cords 18 to raise and lower the shade 11 in the priorart architectural opening covering system 10, the lift cords 18 may beable to be pulled out away from the shade 11 to a distance that allows ahazardous loop 22 to be formed. A loop is considered to be a hazardousloop per the Consumer Product Safety Commission when the loop has adiameter of approximately twelve (12) inches, sufficient for a smallchild to get their head tangled inside. Some industry standards considera loop of approximately seven and one half (7.5) inches to be hazardous.The art is therefore in need of systems and methods to allow the liftingof shades without creating a hazardous loop by the lift cords. In oneembodiment, the loop should be smaller than the listed diameters whenapproximately ten (10 pounds) of push force or approximately five (5)pounds of pull force is exerted on the lift cord.

FIG. 2 is a representative view of an exemplary guide ring used in oneembodiment of an exemplary system for locking lift cords used inarchitectural opening covering systems. Referring to FIG. 2, anexemplary guide ring 20 is illustrated. The guide 20 may be made of anysuitable material, including but not limited to plastic, wood, or metal,including but not limited to brass. In addition, the guide ring 20 shownin FIG. 2 is circular, but any other suitable shape may be used,including but limited to square, rectangular, or D-shaped guide rings.The guide ring 20 has a thickness 26, which may be any suitablethickness, and an inner diameter 28, which may be of any suitablediameter. In one embodiment, the thickness 26 is approximately 0.09inches and the inner diameter 28 is approximately 0.38 inches.

FIGS. 3A-3C illustrate various views of an exemplary locking member 30.In the embodiment shown in FIGS. 3A-3C, the locking member 30 is aunitary member. FIG. 3A is a representative front view of an exemplarylocking member 30 used in one embodiment of an exemplary system forlocking lift cords used in architectural opening covering systems. FIG.3B is a representative sectional end view of the exemplary lockingmember shown in FIG. 3A. FIG. 3C is a representative top view of theexemplary locking member shown in FIG. 3A.

The locking member 30 of FIGS. 3A3C may be used in conjunction with theguide ring 20 and a lift cord like the lift cords 18 shown in FIGS. 1Aand 1B. The locking member 30 is configured to engage the guide ring 20and the lift cord 18 in such a way that the locking member has aselective rotative ability, which allows the lift cord 18 to freely movein a first direction to raise or lower a shade or other architecturalopening covering, but will rotate about the guide ring 20 when the liftcord 18 is pulled in a second direction to pinch the lift cord betweenthe locking member 30 and the guide ring 20 so that the lift cord 18 isprevented from being pulled away from the covering far enough to createa loop of a certain diameter.

The locking member 30 comprises openings 32 configured to receive a liftcord 18 and allow the lift cord 18 to pass freely through the openings32 in a first direction. The locking member also comprises a groove 34that has a width 36. The width 36 of the groove 34 is selected tocorrespond to the thickness 26 of the guide ring 20 such that the guidering 20 can fit snugly into the groove 34 of the locking member 30, suchthat the guide ring 20 is engaged with the locking member 30, and thelocking member 30 can still move about the guide ring 20. The lockingmember 30 may also have a first interior wall 38 and a second interiorwall 40. The first interior wall 38 and a second interior wall 40 can beformed when the locking member 30 is machined or otherwise manufactured.

The first interior wall 38 and a second interior wall 40 may be formedto each have an angle sufficient to allow the locking member 30 tofreely rotate around the guide ring 20 enough to pinch the lift cord 18when the lift cord 18 runs through the openings 32 of the locking member30 and the lift cord is pulled in a direction other than the firstdirection used to raise and lower the shade 11. In one embodiment, thefirst interior wall 38 has an angle of approximately twenty-one (21)degrees and the second interior wall 40 has an angle of approximatelythirty-five (35) degrees.

FIGS. 4A-7 illustrate various views of an alternate exemplary lockingmember 42. FIG. 4A is a representative top view of an alternateexemplary locking member used in one embodiment of an exemplary systemfor locking lift cords used in architectural opening covering systems.FIG. 4B is a representative front view of the exemplary locking membershown in FIG. 4A. FIG. 5 is a representative top view of a ring baseportion of the locking member shown in FIGS. 4A and 4B. FIG. 6A is arepresentative side view of a snap-on post portion of the locking membershown in FIGS. 4A and 4B. FIG. 6B is a representative bottom view of thesnap-on post portion of the locking member shown in FIG. 6A. FIG. 7 is arepresentative top view of the exemplary locking member shown in FIG.4A.

In the embodiment shown in FIGS. 4A-4B, the locking member 42 comprisesthree parts. The first part of the locking member 42 is a ring base 44(also referred to as a button). The ring base 44 is attached to anarchitectural opening covering, such as a shade. In one embodiment, thering base 44 is used in the place of the guide rings 20 as shown inFIGS. 1A and 1B. The ring base 44 may be directly attached to the shadein one embodiment. The ring base 44 can be attached to the shade in anysuitable manner, including but not limited to stitching, glue, adhesive,tacks, and the like. In one embodiment, the ring base has openings 46 toallow the ring base to be attached to the shade or other architecturalcovering opening.

A second part of the locking member 42 is a rotative lock 48. Therotative lock 48 has openings 50 at each end of the rotative lock 48.The openings 50 are configured to receive a lift cord 18 and allow thelift cord 18 to pass freely through the openings 32 in a firstdirection.

The rotative lock 48 is configured to rotate about the third part of thelocking member 42, a snap-on-post 52 (see FIG. 4B). The snap-on post 52also has openings 54 that are configured to receive a lift cord 18 andallow the lift cord 18 to pass freely through the openings 32 in a firstdirection. The snap-on post 52 is configured to snap on to the ring base44. In one embodiment, as seen in FIG. 5, the ring base 44 may have aplurality of slots 56. In one embodiment, as seen in FIGS. 6A and 6B,the snap-on post 52 has a plurality of prongs 58 disposed on a bottomsurface of the snap-on post 52. In one embodiment, the snap-on post 52may be snapped on to the ring base 44 by placing the prongs 58 of thesnap-on post 52 into the slots 56 of the ring base 44. Although theembodiment shown in FIGS. 5, 6A, and 6B show four (4) prongs 58 and four(4) slots 56, any suitable number of prongs 58 and slots 56 may beemployed.

The ring base 44 is attached to an architectural covering, like a shade.The snap-on post 52 is then snapped on the ring base 44. As shown inFIG. 7, the rotative lock 48 is then positioned around the snap-on post52. In one embodiment, the rotative lock is positioned such that theopenings 50 of the rotative lock 48 are generally in alignment with theopenings 54 of the snap-on post 52. A lift cord 18 can then be insertedthrough the openings 50 of the rotative lock 48 and through the of thesnap-on post 52. The rotative lock 48 will then have the ability torotate around the snap-on post 52, allowing the lift cord 18 to freelymove in a first direction to raise or lower a shade or otherarchitectural opening covering, but when the lift cord 18 is pulled in asecond direction, the rotative lock 48 will move such that the lift cord18 will be pinched between the rotative lock 48 and the snap-on post 52so that the lift cord 18 is prevented from being pulled away from thecovering far enough to create a loop of a certain diameter that mightpose a hazard.

FIG. 8 is a representative back view of an exemplary shade having aplurality of lift cords and a plurality of guide rings in conjunctionwith exemplary locking members like those illustrated in FIGS. 3A-3C.Referring now to FIG. 8, an exemplary system is shown where a pluralityof exemplary locking members 30, as shown in FIGS. 3A-3C, are used in anexemplary architectural opening covering system 10′, as depicted fromthe back side. A locking member 30 is used in conjunction with each ofthe guide rings 20 and one or more lift cords 18. Each of the lockingmembers 30 is configured to engage the guide ring 20 and the lift cord18. Each locking member 30 is configured to engage the guide ring 20such that the guide ring 20 fits snugly in the groove 34 of the lockingmember 30. The lift cord 18 passes through the openings 32 of thelocking member 30. The locking member 30 is configured to engage theguide ring 20 and the lift cord 18 in such a way that the locking memberhas a selective rotative ability, which allows the lift cord 18 tofreely move in a first direction to raise or lower a shade or otherarchitectural opening covering. In one embodiment, the first directionis a vertical, or substantially vertical direction, that allows the liftcord 18 to raise or lower the shade 11.

However, when the lift cord 18 is pulled in a second direction, thelocking member 30 is configured to rotate about the guide ring 20 topinch the lift cord 18 between the locking member 30 and the guide ring20 so that the lift cord 18 is prevented from being pulled away from thecovering far enough to create a loop of a certain diameter. In oneembodiment, the second direction is any direction other than a vertical,or substantially vertical direction, that allows the lift cord 18 toraise or lower the shade 11. In another embodiment, the second directionis a horizontal, or substantially horizontal direction. In oneembodiment, due to the locking members 30 pinching the lift cord 18 whenit is pulled in a direction other than the first direction, the lockingmembers 30 will not allow the lift cord 18 to be pulled far enough awayfrom the shade 11 to create a loop of more than seven and one half (7.5)inches in diameter. In another embodiment, due to the locking members 30pinching the lift cord 18 when it is pulled in a direction other thanthe first direction, the lift cord 18 will not be capable of beingpulled far enough away from the shade 11 to create a loop of more thantwo to three (2-3) inches in diameter. The locking member 30 thusengages the guide ring 20 in such a way that the locking member 30 has aselective rotative ability, which allows the lift cord 18 to freely movein a first direction to raise or lower the covering (e.g., the shade11), but will rotate about the guide ring 20 when the lift cord 18 ispulled in a second direction to pinch the lift cord 18 between thelocking member 30 and the guide ring 20 so that the lift cord 18 isprevented from being pulled away from the covering far enough to createa loop of a certain diameter that might pose a hazard.

FIG. 9 is a close up representative side view of the exemplary shade ofFIG. 8 in a partially lifted position, illustrating an exemplary liftcord, exemplary guide rings, and exemplary locking members. FIG. 9 is aclose up view of the exemplary architectural opening covering system 10′shown in FIG. 8, depicting a lift cord 18 having been pulled up topartially raise the shade 11. As seen in FIG. 9, the guide rings 20 havestacked on top of each other, raising the shade 11 upwardly into foldedlayers stacked in an accordion fashion. In addition, the locking members30 have selectively rotated about the guide rings 20 so that the liftcord 18 is prevented from being pulled away from the covering far enoughto create a loop of a certain diameter that might pose a hazard.

FIG. 10 is a close up representative side view of an exemplary liftcord, an exemplary guide ring, and an exemplary locking member,illustrating the exemplary guide ring attached to the shade and theexemplary locking member in a first position. FIG. 11 is a close uprepresentative side view of the exemplary lift cord, the exemplary guidering, and the exemplary locking member of FIG. 10, illustrating theexemplary locking member having been rotated to a second position. FIGS.10 and 11 are close up views of a single set of a guide ring 20, alocking member 30 having a groove 34, and a lift cord passing throughthe guide ring 20 and a pair of openings in the locking member 30.

As seen in FIG. 10, the guide ring 20 is attached to a surface of theshade 11. In this embodiment, the guide ring 20 is attached viastitching 60. FIG. 10 shows the locking member 30 in a first position,i.e., on the top of the guide ring 30. The guide ring 20 is positionedwithin the groove 34 of the locking member 30 such that the lockingmember 30 can rotate around a diameter of the guide ring 20 about anaxis of the lift cord 18.

FIG. 11 shows the locking member 30 in a second position, i.e., on thebottom of the guide ring 30. Compared to the first position shown inFIG. 10, the locking member 30 has rotated around a diameter of theguide ring 20 about an axis of the lift cord 18. It is noted that thelocking member 30 can only get to the position shown in FIG. 11 if thestitching 60 shown in FIG. 10 and the size of the guide ring 20 and thelocking member 30 allow the locking member 30 to rotate that far. Inother embodiments, the locking member 30 may only to be able to rotatepart of the way towards the second position shown in FIG. 11.

FIG. 12 is a representative back view of an exemplary shade having aplurality of lift cords and a plurality of guide rings in conjunctionwith exemplary locking members like those illustrated in FIGS. 4A-7.Referring now to FIG. 12, an exemplary system is shown where a pluralityof exemplary locking members 30, as shown in FIGS. 4A-7, are used in anexemplary architectural opening covering system 10″, as depicted fromthe back side. In place of the guide rings 20 shown in the embodiment ofFIG. 8, a plurality of the locking members 42 are used. In particular, anumber of ring bases 44 are attached to an architectural openingcovering, such as a shade 11. In one embodiment, the ring base 44 isused in the place of the guide rings 20 as shown in FIGS. 1A and 1B. Thering base 44 may be directly attached to the shade 11, as describedabove.

A snap-on post 52, as described above with references to FIG. 4B, 6A,and 6B, is then snapped on to the ring base 44 as described above. Thesnap-on post 52 also has openings 54 that are configured to receive alift cord 18 and allow the lift cord 18 to pass freely through theopenings 32 in a first direction.

A rotative lock 48 as described above in FIGS. 4A, 4B, and 7 is thenpositioned around the snap-on post 52. The rotative lock 48 has openings50 at each end of the rotative lock 48. The openings 50 are configuredto receive a lift cord 18 and allow the lift cord 18 to pass freelythrough the openings 32 in a first direction. In one embodiment, therotative lock is positioned such that the openings 50 of the rotativelock 48 are generally in alignment with the openings 54 of the snap-onpost 52. A lift cord 18 can then be inserted through the openings 50 ofthe rotative lock 48 and through the of the snap-on post 52. Therotative lock 48 will then have the ability to rotate around the snap-onpost 52, allowing the lift cord 18 to freely move in a first directionto raise or lower a shade or other architectural opening covering, butwhen the lift cord 18 is pulled in a second direction, the rotative lock48 will move such that the lift cord 18 will be pinched between therotative lock 48 and the snap-on post 52 so that the lift cord 18 isprevented from being pulled away from the covering far enough to createa loop of a certain diameter that might pose a hazard.

The rotative lock 48 has a rotative ability, which allows the lift cord18 to freely move in a first direction to raise or lower a shade orother architectural opening covering. In one embodiment, the firstdirection is a vertical, or substantially vertical direction, thatallows the lift cord 18 to raise or lower the shade 11. However, whenthe lift cord 18 is pulled in a second direction, the rotative lock 48is configured to rotate about the snap-on post 52 to pinch the lift cord18 between the rotative lock 48 and the snap-on post 52 so that the liftcord 18 is prevented from being pulled away from the covering far enoughto create a loop of a certain diameter. In one embodiment, the seconddirection is any direction other than a vertical, or substantiallyvertical direction, that allows the lift cord 18 to raise or lower theshade 11. In another embodiment, the second direction is a horizontal,or substantially horizontal direction. In one embodiment, due to thelift cord 18 being pinched between the rotative lock 48 and the snap-onpost 52 when it is pulled in a direction other than the first direction,the rotative lock 48 will not allow the lift cord 18 to be pulled farenough away from the shade 11 to create a loop of more thanapproximately seven and one half (7.5) inches in diameter. In anotherembodiment, due to the lift cord 18 being pinched between the rotativelock 48 and the snap-on post 52 when it is pulled in a direction otherthan the first direction, the lift cord 18 will not be capable of beingpulled far enough away from the shade 11 to create a loop of more thanapproximately two to three (2-3) inches in diameter. In one embodiment,the loop should be smaller than the listed diameters when approximatelyten (10 pounds) of push force or approximately five (5) pounds of pullforce is exerted on the lift cord.

FIG. 13 is a close up representative side view of the exemplary shade ofFIG. 12 in a partially lifted position, illustrating exemplary lockingmembers like those illustrated in FIGS. 4A-7 attached to a surface ofthe shade and an exemplary lift cord running through the exemplarylocking members. FIG. 13 is a close up view of the exemplaryarchitectural opening covering system 10′ shown in FIG. 8, depicting alift cord 18 having been pulled up to partially raise the shade 11. Asseen in FIG. 9, the locking members 42 have stacked in an accordionfashion, raising the shade 11 upwardly into folded layers. In addition,the rotative lock 48 of each of the locking members 42 have selectivelyrotated about the snap-on post 52 of each of the locking members 42 sothat the lift cord 18 is prevented from being pulled away from thecovering far enough to create a loop of a certain diameter that mightpose a hazard.

FIG. 14 is a close up representative side view of an exemplary lockingmember like those illustrated in FIGS. 4A-7 and an exemplary lift cordrunning through the exemplary locking member. Each locking member 42 hasa ring base 44, a snap-on post 52, and a rotative lock 48. The ring base44 of the locking member 42 is attached to a surface of the shade 11.The lift cord 18 passes through a pair of openings in the rotative lock48 and through a matching set of openings in the snap-on post 52. Therotative lock 48 is positioned around the snap-on post 52 such that therotative lock 48 can rotate around a diameter of the snap-on post 48 topinch the lift cord 18 when the lift cord 48 is pulled in a seconddirection that is any direction other than a first direction used toraise or lower the shade 11

Although the embodiments disclosed herein have been illustrativelydescribed with respect to various embodiments for window openings orother architectural openings, it will be recognized that the coverassembly can be advantageously utilized as a covering for any indoor oroutdoor passage, portal, gate opening or the like. For example, thecover assembly in other embodiments can be used as a closure for a tentor cabana or a decorative screen or partition that may be deployed withan associated frame, to provide a freestanding room divider, privacyscreen, sun-blocking structure or the like.

While the embodiments disclosed herein have been described herein inreference to specific aspects, features and illustrative embodiments, itwill be appreciated that the utility of the invention is not thuslimited, but rather extends to and encompasses numerous othervariations, modifications and alternative embodiments, as will suggestthemselves to those of ordinary skill in the field of the presentinvention, based on the disclosure herein. Correspondingly, theinvention as hereinafter claimed is intended to be broadly construed andinterpreted, as including all such variations, modifications andalternative embodiments, within its spirit and scope.

Those skilled in the art will recognize improvements and modificationsto the preferred embodiments of the present disclosure. All suchimprovements and modifications are considered within the scope of theconcepts disclosed herein and the claims that follow.

What is claimed is:
 1. An apparatus for locking a lift cord designed tolift coverings for architectural openings, comprising: a ring baseattached to a covering for an architectural opening, the ring basehaving a plurality of slots; a snap-on post having at least one openingand a plurality of prongs disposed on a surface of the snap-on post,wherein the at least one opening is configured to receive the lift cordand wherein each of the plurality of prongs is configured to fit into acorresponding one of the plurality of slots of the ring base such thatthe snap-on post can be snapped onto the ring base; and a rotative lockmember having at least one opening configured to receive the lift cord,wherein the rotative lock member is configured to be positioned aroundthe snap-on post such that the at least one opening of the rotative lockmember is aligned with the at least one opening of the snap-on post toallow the lift cord to pass through the at least one opening of both thesnap-on post and the rotative lock member, wherein the rotative lockmember is configured to allow the lift cord to freely move in and out ofthe at least one opening of both the snap-on post and the rotative lockmember in a first direction to raise or lower the covering, and therotative lock member moves about the snap-on post when the lift cord ispulled in a second direction that is different from the first directionto pinch the lift cord between the rotative lock member and the snap-onpost to prevent the lift cord from being pulled away from the covering.2. The apparatus of claim 1, wherein the first direction issubstantially vertical and the second direction is a direction otherthan substantially vertical.
 3. The apparatus of claim 1, wherein thelocking member prevents the lift cord from being pulled away from thecovering far enough to create a loop of more than approximately 7.5inches.
 4. The apparatus of claim 1, wherein the locking member preventsthe lift cord from being pulled away from the covering far enough tocreate a loop of more than approximately 12 inches.
 5. The apparatus ofclaim 1, wherein the locking member prevents the lift cord from beingpulled away from the covering far enough to create a loop of more thanapproximately two to three inches.
 6. The apparatus of claim 1, whereinthe covering is a shade.
 7. The apparatus of claim 1, further comprisinga covering for an architectural opening that is configured to be raisedor lowered by the lift cord.
 8. The apparatus of claim 1, wherein therotative lock member and the snap-on post are configured to maintaincontact with the lift cord while the life cord is being pulled in thesecond direction.
 9. A method for locking a lift cord designed to liftcoverings for architectural openings, comprising: providing a coveringfor a architectural opening that is configured to be raised or loweredby at least one lift cord; attaching a ring base having a plurality ofslots to the covering for an architectural opening; snapping onto thering base a snap-on post having at least one opening and a plurality ofprongs disposed on a surface of the snap-on post, the snappingcomprising fitting each of the plurality of prongs into a correspondingone of the plurality of slots of the ring base, wherein the at least oneopening is configured to receive the at least one lift cord; andpositioning a rotative lock member around the snap-on post, wherein therotative lock member comprises at least one opening configured toreceive the at least lift cord, and wherein the at least one opening ofthe rotative lock member is aligned with the at least one opening of thesnap-on post to allow the at least one lift cord to pass through the atleast one opening of both the snap-on post and the rotative lock member,wherein the rotative lock member is configured to allow the at least onelift cord to freely move in and out of the at least one opening of boththe snap-on post and the rotative lock member in a first direction toraise or lower the covering, and the rotative lock member moves aboutthe snap-on post when the at least one lift cord is pulled in a seconddirection that is different than the first direction to pinch the atleast one lift cord between the rotative lock member and the snap-onpost to prevent the at least one lift cord from being pulled away fromthe covering.
 10. The method of claim 9, wherein the first direction issubstantially vertical and the second direction is a direction otherthan substantially vertical.
 11. The method of claim 9, wherein thelocking member prevents the lift cord from being pulled away from thecovering far enough to create a loop of more than approximately 7.5inches.
 12. The method of claim 9, wherein the locking member preventsthe lift cord from being pulled away from the covering far enough tocreate a loop of more than approximately 12 inches.
 13. The method ofclaim 9, wherein the locking member prevents the lift cord from beingpulled away from the covering far enough to create a loop of more thanapproximately two to three inches.
 14. The method of claim 9, whereinthe covering is a shade.
 15. The method of claim 9, wherein the rotativelock member and the snap-on post maintain contact with the lift cordwhile the lift cord is being pulled in the second direction.